I would take a look at Vanilla. Mainly it's a forums script, but it also has blogging features.
I has all the things you mentioned. Except is looks good enough:
the entire code is about 500k
it's well structured(MVC and well done), it supports extensions
I'm not sure about tags(for sure they are supported by extensions if not in the core)
looks good, have template mechanism, a few nice themes are available
there are extensions to prevent spam, I don't know if an aksimet extension is available.
it's mysql based
Optional: - don't know what you mean by apis - plugins and themes supported
Wet dream should be supported, at least in theory(on my old vanilla forum it worked in a manner I didn't want to, the code was html encoded, so html tags were not supported, including links, however i've seen them working on other forums), if not extensions could solve the problem.
Regarding the spam control and user comments posting you should use 2-3 plugins(Yes plugins are supported and are called Extensions).
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不确定它到底从你的清单中删除了多少东西，但我认为 Habari 值得一看。
他们托管了一个 演示，如果您想快速查看，可以随意使用。
Not sure exactly how many things it knocks off your list but I think Habari is worth a look.
They host a demo you can mess with if you want to check it out quickly.
我会看一下 Vanilla。它主要是一个论坛脚本，但它也具有博客功能。
你提到的所有东西我都有。除了看起来足够好之外：
可选：
- 不知道你所说的api是什么意思
- 支持的插件和主题
至少在理论上应该支持湿梦（在我的旧香草论坛上，它以我不想要的方式工作，代码是html编码的，所以不支持html标签，包括链接，但是我见过他们在其他论坛上工作），如果没有扩展可以解决问题。
关于垃圾邮件控制和用户评论发布，您应该使用 2-3 个插件（是的，支持插件，称为扩展）。
I would take a look at Vanilla. Mainly it's a forums script, but it also has blogging features.
I has all the things you mentioned. Except is looks good enough:
Optional:
- don't know what you mean by apis
- plugins and themes supported
Wet dream should be supported, at least in theory(on my old vanilla forum it worked in a manner I didn't want to, the code was html encoded, so html tags were not supported, including links, however i've seen them working on other forums), if not extensions could solve the problem.
Regarding the spam control and user comments posting you should use 2-3 plugins(Yes plugins are supported and are called Extensions).
有大量用 PHP 编写的博客引擎 - 都略有不同。就我的目的而言，我发现缘分是最合适的。
C.
There's a huge number of blogging engines written in PHP - all slightly different. For my purposes, I found Serendipity to be the most apposite.
C.